Walker MDD Owner's Manual

Also see for MDD: Owner's manual Owner's manual

Contents

Maintenance Instructions CLEANING574. Use a bright light inside the element to inspectfor damage. Check the element very carefullyfor pin holes or other damage that will allowdirt to leak through the paper media. Replaceelement if necessary.5. Check the condition and resilience of the radialsealing surface (inside of the open end) of thefilter. Replace the filter if any cracks, tears, orother damage to the sealing surface are noted.6. Use a clean, damp cloth and wipe the interior ofthe air cleaner canister clean. Use special careto clean both the inside and outside surfacesof the outlet tube.IMPORTANT: Any dust left on the inside of theoutlet tube will go into the engine and causewear.7. Check the outside surface of the outlet tube forsmoothness and cleanness (this is the sealingsurface).8. Insert and seat the filter element carefully intothe canister, applying pressure at the outer rimof the filter; not at the flexible center. Make surethe filter element is completely in place beforeinstalling the cover.IMPORTANT: DO NOT use the cover latchesto force the filter into the canister -- the covershould fit on with no extra force.NOTE: DO NOT use petroleum based lubri-cants on the sealing surface of the filter; use tal-cum powder or dry silicone lubricants if requiredfor filter installation.Air Filter Element Replacement9. Install the cover with the word “TOP” properlyoriented to the top of the canister. Give the cov-er a slight twist as it reaches the canister tomake sure the tab inside the cover goes into aslot, otherwise the cover will not fit properly.Make sure both the top and bottom cover latch-es are securing the cover in place.Proper Orientation of Air Cleaner Cover10. Check the air intake hose for cuts, nicks, etc.,and the hose clamps for tightness.11. Reset the air restriction indicator (press buttonon bottom).Engine Cooling SystemRadiator Screen and Cooling FinsTo prevent the engine from overheating and possi-ble engine damage, clean grass clippings, chaff,and dirt from the fine mesh radiator intake screendaily. In certain mowing conditions (dry grass,leaves, tree “cotton”, etc.), it may be necessary tocheck and clean the screen several times during useto prevent engine overheating.1. Lift to remove the screen. To clean the screen,wash with soapy water or blow out with com-pressed air.2. Inspect the radiator cooling fins for materiallodged in this area which would restrict coolingairflow. Use pressurized air or water to clean.DO NOT use any tool, like a screwdriver orknife, to clean material out of the fins as thismay damage the cooling fins. DO NOT use coldwater on a hot radiator.CanisterRadial SealingSurfaceRadialseal™Filter ElementSafety FilterOrient to Topof CanisterCover LatchCover LatchVacuator™Valve